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47 Tucanae

Tucana is a constellation of stars in the southern sky, named after the toucan, a South American bird. It is one of twelve constellations conceived in the late sixteenth century by Petrus Plancius from the observations of Pieter Dirkszoon Keyser and Frederick de Houtman. It first appeared on a 1598 celestial globe by Plancius and Jodocus Hondius in Amsterdam and was depicted in Johann Bayer's star atlas Uranometria of 1603. French explorer and astronomer Nicolas Louis de Lacaille gave its stars Bayer designations in 1756. Tucana is not a prominent constellation as all of its stars are third magnitude or fainter; the brightest is Alpha Tucanae with an apparent visual magnitude of 2.87. Beta Tucanae is a star system with six member stars, while Kappa is a quadruple system. Five star systems have been found to have exoplanets to date. The constellation contains most of the Small Magellanic Cloud, along with 47 Tucanae (pictured), one of the brightest globular clusters in the sky. The constellations Tucana, Grus, Phoenix and Pavo are collectively known as the "Southern Birds". (Full article...)

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Wentworth Falls

Wentworth Falls is a seasonal three-tiered waterfall fed by the Jamison Creek, near the town of Wentworth Falls in the Blue Mountains region of New South Wales, Australia. The falls are accessible via the National Pass Walking Trail and the Overcliff/Undercliff Walk. The total height of the waterfall is 187 metres (614 ft); this includes the upper falls (shown here), which have two drops, and the lower falls.

Photograph: David Iliff

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